Sparse Multi-Scale Grammars for Discriminative Latent Variable Parsing Slav Petrov author Dan Klein author 2008-10 text Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing Mirella Lapata editor Hwee Tou Ng editor Association for Computational Linguistics Honolulu, Hawaii conference publication petrov-klein-2008-sparse https://aclanthology.org/D08-1091/ 2008-10 867 876